The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Jan. 21, 2022
Applicant:
Evonik Oxeno Gmbh & Co. KG, Marl, DE;
Inventors:
Tanita Valérie Six, Dortmund, DE;
Armin Matthias Rix, Marl, DE;
Moritz Schröder, Muenster, DE;
Stephan Peitz, Oer-Erkenschwick, DE;
Niklas Paul, Marl, DE;
Philip Lutze, Dinslaken, DE;
Andreas Oldenkott, Haltern am See, DE;
Franz-Josef Stock, Haltern am See, DE;
Marius Tiesbohnenkamp, Bochum, DE;
Assignee:
Evonik Oxeno GmbH & Co. KG, Marl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/08 (2006.01); C07C 11/08 (2006.01);
U.S. Cl.
CPC ...
C07C 7/08 (2013.01); C07C 11/08 (2013.01);
Abstract
A process for removing butenes from C4-hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent. The process also involves heat integration, which allows utilization of the heat of the solvent for heating and/or at least partly evaporating various streams.